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-rw-r--r--lib/builtins/fixsfdi.c54
1 files changed, 29 insertions, 25 deletions
diff --git a/lib/builtins/fixsfdi.c b/lib/builtins/fixsfdi.c
index 4f6cfdd7a5c6..fab47e272a25 100644
--- a/lib/builtins/fixsfdi.c
+++ b/lib/builtins/fixsfdi.c
@@ -1,43 +1,47 @@
/* ===-- fixsfdi.c - Implement __fixsfdi -----------------------------------===
*
- * The LLVM Compiler Infrastructure
+ * The LLVM Compiler Infrastructure
*
* This file is dual licensed under the MIT and the University of Illinois Open
* Source Licenses. See LICENSE.TXT for details.
*
* ===----------------------------------------------------------------------===
- *
- * This file implements __fixsfdi for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
*/
-#include "int_lib.h"
+#define SINGLE_PRECISION
+#include "fp_lib.h"
-/* Returns: convert a to a signed long long, rounding toward zero. */
+ARM_EABI_FNALIAS(f2lz, fixsfdi)
-/* Assumption: float is a IEEE 32 bit floating point type
- * su_int is a 32 bit integral type
- * value in float is representable in di_int (no range checking performed)
+#ifndef __SOFT_FP__
+/* Support for systems that have hardware floating-point; can set the invalid
+ * flag as a side-effect of computation.
*/
-/* seee eeee emmm mmmm mmmm mmmm mmmm mmmm */
-
-ARM_EABI_FNALIAS(f2lz, fixsfdi)
+COMPILER_RT_ABI du_int __fixunssfdi(float a);
COMPILER_RT_ABI di_int
__fixsfdi(float a)
{
- float_bits fb;
- fb.f = a;
- int e = ((fb.u & 0x7F800000) >> 23) - 127;
- if (e < 0)
- return 0;
- di_int s = (si_int)(fb.u & 0x80000000) >> 31;
- di_int r = (fb.u & 0x007FFFFF) | 0x00800000;
- if (e > 23)
- r <<= (e - 23);
- else
- r >>= (23 - e);
- return (r ^ s) - s;
+ if (a < 0.0f) {
+ return -__fixunssfdi(-a);
+ }
+ return __fixunssfdi(a);
}
+
+#else
+/* Support for systems that don't have hardware floating-point; there are no
+ * flags to set, and we don't want to code-gen to an unknown soft-float
+ * implementation.
+ */
+
+typedef di_int fixint_t;
+typedef du_int fixuint_t;
+#include "fp_fixint_impl.inc"
+
+COMPILER_RT_ABI di_int
+__fixsfdi(fp_t a) {
+ return __fixint(a);
+}
+
+#endif